upd: update permissions on files after copy

Dockerfile

@@ -71,6 +71,9 @@ RUN mkdir /var/www/html/var/cache
 RUN mkdir /var/www/html/var/log
 
 RUN chown -R 33:33 /var/www/html /data
-RUN chmod -R 755 /var/www/html /data
+RUN find /var/www/html -type d -exec chmod 755 '{}' \;
+RUN find /var/www/html -type f -exec chmod 644 '{}' \;
+RUN chmod 755 /data
+RUN chmod 644 /data/*
 
 EXPOSE 80